  2009 - The Great Iron Trail the Story of the First Transcontinental Railroad (Hardcover) → Paperback ISBN-13: 9781104847531 ISBN-10: 1104847531 ?  2007 - The Great Iron Trail the Story of the First Transcontinental Railroad (Paperback) → Hardcover ISBN-13: 9780548440308 ISBN-10: 0548440301 ?  1974 - Hoofbeats of Destiny (Paperback) → Paperback, Hardcover ISBN-13: 9780345238481 ISBN-10: 0345238486 ?  1973 - Hoofbeats of Destiny (Paperback) → Paperback, Hardcover ISBN-13: 9780345031730 ISBN-10: 0345031733 ?  The Dawnseekers the First History of American Paleontology (Hardcover) ISBN-13: 9780151239733 ISBN-10: 0151239738 ?      All About Intelligence Human Animal and Artificial (Paperback) ISBN-13: 9780868402529 ISBN-10: 0868402524 Genres: Computers & Technology, Nonfiction, Science & Math ?  Hoofbeats of Destiny (Hardcover) → Paperback ISBN-13: 9780891905431 ISBN-10: 089190543X Genre: Literature & Fiction ? |
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